EXTRACT VALUE WITH EFFICIENT FLOTATION
Separation and concentration of minerals through an efficient froth flotation process is vital in recovering the most value from ore beneficiation operations. Dow provides a wide range of integrated solutions to help our customers optimize their flotation processes. Dow offers flotation solutions for sulfide and non-sulfide minerals and non-metallic ores, including coal, to help mining operators improve recovery and operating efficiency by optimizing their froth flotation processes.
Surfactants for improved grinding efficiency
ACUMER™ Rheology Modifiers & Dispersants from Dow help improve recovery by enhancing collector selectivity for the target mineral. The ACUMER products act as co-collectors and dispersing particles which allow collectors better access to target mineral and liberating surfaces from slime (micro-fines). The ACUSOL™ Rheology Modifiers and Thickeners help to stabilize low solids mineral slurries to improve handling and metallurgical recovery.
|ACUMER™ 9000 Series Dispersants|
|ACUSOL™ Rheology Modifiers & Thickeners|
Frothers are required to strengthen and stabilize air bubbles in the flotation system so the froth layer can be optimized for the system. Dow offers a range of glycol ether, polyglycol and alcohol-based frothers designed for a wide range of system conditions and requirements, from fine to coarse particle flotation. Some of the benefits offered by Dow frothers include reduced water surface tension, improved froth stability and accelerated flotation
|Methyl Isobutyl Carbinol (MIBC)|
|Methyl Isobutyl Ketone (MIBK)|
For prevention and control of unwanted foam
In mining operations defoamers are used to break and control foam and are often used in concentrate and tailings thickeners, Bayer liquors & red-mud circuits in alumina plants, waste water treatment plants, bacterial oxidation and digestion processes. Dow offers a range of Polypropylene Glycols (PPGs) and surfactants to help improve the efficiency and reliability of mining operations by controlling unwanted foam.
Depressants enhance flotation separation
Dow’s legacy ethyleneamine products serve as excellent flotation depressants for depression of iron and other metals and in certain types of ores including gold and pyrite.
Optimize solid/liquid separation
Concentrate and tailings streams both require effective solid/liquid separation. Dewatering aids are used in the thickeners and filtration units to improve the speed and effectiveness of dewatering. Dow’s POLYOX™ WSR Specialty Flocculants exhibit a unique attraction toward colloidal silicates and are added to thickener feed streams to optimize dewatering and maximize solids density (note, can be used as co flocculant to enhance mainstream flocculants). TRITON™ Filtration Aids are surface tension reducing surfactants used to reduce moisture content of filter cakes and centrifuged solids.
|POLYOX™ WSR Specialty Flocculants|